Energy Drinks Pose Risks to Teens, Study Finds

FRIDAY, Feb. 1 (HealthDay News) -- A new report warns that popular energy drinks such as Red Bull and Rockstar pose potential hazards to teens, especially when mixed with alcohol.

The report, published in the February issue of the journal Pediatrics in Review, summarizes existing research and concludes that the caffeine-laden beverages can cause rapid heartbeat, high blood pressure, obesity and other medical problems in teens. Combined with alcohol, the potential harms can be severe, the authors noted.

"I don't think there is any sensationalism going on here. These drinks can be dangerous for teens," said review lead author Dr. Kwabena Blankson, a U.S. Air Force major and an adolescent medicine specialist at the Naval Medical Center in Portsmouth, Va. "They contain too much caffeine and other additives that we don't know enough about. Healthy eating, exercise and adequate sleep are better ways to get energy."

Doctors and parents need to "intelligently speak to teenagers about why energy drinks may not be safe," Blankson said. "They need to ask teens if they are drinking energy drinks and suggest healthy alternatives."

Surveys suggest that as many as half of young people consume these unregulated beverages, often in search of a hefty dose of caffeine to help them wake up, stay awake or get a "buzz."

Sixteen-ounce cans of Red Bull, Monster Energy Assault and Rockstar hold about 160 milligrams (mg) of caffeine, according to the report. However, a much smaller container of the drink Cocaine -- briefly banned in 2007 -- delivers 280 mg in just 8.4 ounces. By contrast, a typical cup of coffee packs a caffeine punch of about 100 mg.

Too much caffeine, Blankson said, "can have troubling side effects." More than 100 milligrams of caffeine a day is considered unhealthy for teens, he noted.

Energy drinks are often served cold and sometimes with ice, making them easier to chug than hot coffee. And many contain additives such as sugar, ginseng and guarana, which enhance the effect of caffeine, the researchers explained.

"We don't know what these additives do to the body after periods of extended use," Blankson said.